Of the 13 priority pollutant metals tested for, two are found in elevated levels in passivation waste effluent waters.

在经检测的13种优先级污染金属中，发现有两种金属在钝化废液中的水平有所增加。

youdao

Effluent waste from these concentrated animal facilities are undermining what little clean water and healthy micro-nutrient cycles still exist out there.

FORBES: So Long To The Era Of Cheap Food?

We feed them animal waste, and they convert it from manure to digested effluent, eating the carbohydrates and producing biogas that contains methane.

FORBES: Magazine Article